Mixed airship provided with parachute



May 14,1929. e. TALLEI luxnn AIRSHIP PROVIDED WITH PAR'AcHuTs Filed Oct.12, 1927 2 Sheets-Sheet l w mg A Her/12y May 14, 1929. ca. TALLEI1,712,529

MIXED AIRSHIP PROVIDED WITH PARACHUTE Filed 001:. 1927 2 SheecS -Sheet 2Guido T he line X- KofFi Patented May 14, 1929.

UNITED STATES PATENT OFFICE.

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Application filed October 12, 1927, Serial No. 225,721,- and in ItalyOctober 15, 1926.

The present invention concerns a novel re the supporting surfaces beingarranged in such a manner that they can act as parachutes when thenecessity arises.

The airship according to the present intention consists substantially ofa central hollow body of elongated shape, said hollow body havingsymmetrical carrying surfaces externally disposed and attached to thesides and top thereof. a y

The central body consists of a gas envel 2h ope of aluminium sheet or ofany other light metal sheet; said envelope is carried by a. supportingand stiffening frame and contains in its interior air heated by means ofthe exhaust gases of the engines, so as to produce a statical liftingpower to which, during the flight is added the dynamical lifting powerdue to the pressure which the external air develops against the carryingsurfaces, which act in the same manner as 3% the wings of the usualairplane and, when the necessity arises, also as parachutes. s

In the annexed drawing, which shows by way ofexample and schematically apractical embodiment of the invention: Fig. 1 is a top view of theairship. Fig. 2 is a side view. The Figures 3 and-4 are, cross sectionsaccording to the lines X X and Y Y of Fig. 1, respectively.

Figure 3 is a horizontalsection through the longitudinal axis. a

Figure 4 is a vertical longitudinal section of'the tail end drawn toenlarged scale.-

Figure 5 is a vertical cross-section on the re 1. As shown in t edrawing the airship according to the invention substantially consists ofan envelope 25 of thin corrugated metal sheet covered by an outer skin24 which is of thin smooth metal sheet.

. double envelope which constitutes a strongly insulating wall has thegeneral appearance dill of the body of a bird, the mouth of which isseen at 19, the head at 20 and themeck at Said strongly the aircontained between the ina rigid or flexible transmisison of anyconvenient type. Figure 4 shows that said surfaces are carried by a rack30 engaging a pinion 31 which can be rotated in either direction bymeans of atransmission 32, so

that the pilot can'shift the rack and said second supporting surfaceslongitudinally as desired. The steering surfaces comprise a verticaldisc 9 mounted rotatable around a vertical axis 36 passing-through thecentre of the discs 3, 3". Axis 36 has positioned on its lower extremitya chain wheel 34 which may in turn be rotated by a common transmission35. Three vertical discs 5 are mounted under the tail of the machine andthe are also rotatable around vertical axes which lie all in the middleplane of the machine. I

The axes 33 carry chain wheels 34, which may be in turn rotated by acommon transmission 35.

In order to impart to the gas envelope the necessary resistance its body23 is mounted upon ring shaped frames 11 conveniently distanced andconnected by means of stiffening and supporting spokes 22 toa' centraltube 10 extending for the whole longitudinal axis'of the airship. -Thistube is closed at the fore end and freely open at the rear end 95 forthe purpose which will be explained hereinafter.

In'fact said tube has not only the purpose of acting as a hub for theattachment of the spokes 22 but is also intended to receive in proximityof its fore end, the exhaust gases escaping from the engines placed inthe cars 7 The exhaust gases thus flow through conduits 27 to thecentral tube 10 and heat ternal walls of the envelope and the externalwall of the tube 10. The increase of temperature thus obtained causes ararefaction of the air contained inthe envelope and therefore theproduction of a certain amount of lifting power which concreased by thefact that both discs 3', 3" and 6', 6" are filled-with a light gas, ashelium for instance.

In the'walls of the central tube 10 openings 28 may be provided throughwhich the exhaust gases may escape in the interior 23 of the envelope.In this manner the lifting power can be notably increa'sed'because ahigher temperature can be maintained in the interior of the envelope.

To the lifting ower thus obtained is added the dynamica lifting powersupplied by the two, or more, circular wings 3 and 3" before mentionedcooperating with the two discs 6', (3" at the rear. The main wings o arekept rotating permanently, either by means of any convenienttransmission connected with the propulsion motors, by independent motors29 or by means of' the action of the wind. This rotation diminishes theresistance to the forward movement and adds to the stability by reasonof the gyroscopic effect. By reason of their circular shape the wings3', 3" will act also con veniently as parachute surfaces. in the case ofan involuntary descent.

For steering purposes the action of the tail supporting surfaces 6', 6"can be changed by shifting them longitudinally forwards or rearwards ina manner herein before explained.

The common bottom of the two cars 7 forms also a supplementary wing orsup.-

porting surface which adds to the dynamiw cal lifting .power.

The propulsive power is supplied by two sets of engines symmetricallylaced in respect of the central body on card of the two car's, the hullsof which are conveniently shaped, in such manner as to allow'theapplication of the several propellers 8, 26 to each one of them in themanner shown in the drawing.

Further a not negligible increase of the propelling power is due to thearrangement above mentioned that the exhaust gases escape in the axialdirection at the rear end of the longitudinal conduit 10, the reactionof happens in a jet propelled ship.

The airship built and working in the manner above said possessesconsiderable advantages in comparison of the other airshi )s of the sameclass already known, and o the airship which has formed the object of aprecedent application, ,Serial N. 138,464 of the same inventor, inasmuchas the circular shape of the supporting surfaces, their rotatory motion,and the disc shaped steering surfaces arranged at the top and under thetail of the machine, all contribute to secure better penetration,greater stability and easier steel-ability.

Claims:

1. An airship with mixed sustentation, comprising an envelope containingair, internal combustion engines disposed on either sideof saidenvelope, a hollow tube extending. along the longitudinal axis of saidenvelope, a plurality of conduits leading the exhaust gases from saidengines through said longitudinal tube ,and a plurality of hollow discshaped carrying surfaces containing a light gas positioned on saidenvelope.

2. An airship with mixed sustentation, comprising an envelope containingair, internalcombustion engines disposed on either side of saidenvelope, a hollow tube extending along the longitudinal axis of saidenvelope, a plurality of conduits leading the exhaust gases from said enines through said longitudinal tube, a plum ity of main disc shapedsupporting surfaces mounted coaxially on said envelope above saidinternal combustion en ines and a plurality of auxiliary disc shapedsupporting surfaces mounted co-axially above one extremity of saidlongitudinal tube.

3. 'An airship accordin to claim 2 havin a means for rotating said maindisc shape supporting surfaces and a second means for shifting saidauxiliary disc shaped support ing surfaces longitudinally.

4. An airshi according to claim 2 having a plurality o verticallymounted steerin discs capable of rotation about a vertica axis anrotating said steering discs.

In testimony whereof I have afiixed my signature at Rome thistwenty-seventh day of September, 1927.

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